/*
 * Copyright 2009 Brett Morgan.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package com.domesticmouse.waveoteditor.server;


import com.domesticmouse.waveoteditor.client.ServerResult;
import com.domesticmouse.waveoteditor.client.UpdateService;
import com.domesticmouse.waveoteditor.client.ops.ClientDocOpDidntApply;
import com.domesticmouse.waveoteditor.client.ops.GwtClientDocOp;
import com.domesticmouse.waveoteditor.client.wave.model.operation.OperationException;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;

@SuppressWarnings("serial")
public class UpdateServiceImpl extends RemoteServiceServlet implements UpdateService {

	public ServerResult update(GwtClientDocOp edit, int atRevision) throws ClientDocOpDidntApply {
		try {
			GwtClientDocOp clientDocOp = new GwtClientDocOp();
			clientDocOp.configureFromBufferedDocOp(Document.instance.addEditAt(edit.buildBufferedDocOp(), atRevision));
			
			ServerResult result = new ServerResult();
			result.setClientDocOp(clientDocOp);
			result.setServerRevision(Document.instance.getServerRevision());
			return result;
		} catch (OperationException e) {
			e.printStackTrace();
			throw new ClientDocOpDidntApply();
		}
	}

}
